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All Journal J@TI (TEKNIK INDUSTRI) OPSI JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) PROFESIENSI SIGMA TEKNIKA Jurnal ARTI : Aplikasi Rancangan Teknik Industri Profisiensi : Jurnal Program Studi Teknik Industri Jurnal Manajemen dan Teknologi Rekayasa Jurnal Manajemen Rekayasa dan Inovasi Bisnis JT-IBSI (Jurnal Teknik Ibnu Sina) Jurnal Logistica Journal of Manufacturing in Industrial Engineering & Technology
Hery Irwan
Universitas Riau Kepulauan
Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Other

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Journal : SIGMA TEKNIKA

 1 
CRASH PROGRAM JALUR KRITIS DENGAN CARA OVERLAPPING (STUDY REVIEW) Irwan, Hery
SIGMA TEKNIKA Vol 2, No 1 (2019): Sigma Teknika Vol.2 No.1 Juni 2019
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.929 KB) | DOI: 10.33373/sigma.v2i1.1671

Abstract

Project management in the length of time of completion or better known as lead time is the time that has been agreed between the project implementers in this project managers and customers as the owner of the project. Time-based project implementers will make planning, scheduling and control of existing resources with the purpose of the length of the project in accordance with the agreed upon. In the process constraints will always occur which cause the delay activities that become part of the overall project. The delay that occurs on the critical path if not controlling and acceleration would cause backwards in time from the time of completion of the project. This will cause losses for both the executor fines for the delay as well as for the project owner to lose an opportunity of reception of the project late from agreements. This paper contains the possibility of doing a program crash or the acceleration by means of melaukukan overlapping. For sure the acceleration by means of overlapping could not immediately be implemented in all activities of the project. The decision to do overlapping largely determined by the knowledge and experience of the person in charge of the project.  Keywords: Crash program, overlapping, critical path method.
INCREASE PRODUCTION OUTPUT ON TWA 1342 MACHINE WITH OVERALL EQUIPMENT EFFECTIVENESS (OEE) METHOD (CASE STUDY: PT XYZ BATAM) Vera Methalina Afma; Hery Irwan; Elsa Berliani
SIGMA TEKNIKA Vol 5, No 2 (2022): SIGMATEKNIKA, VOL. 5, N0. 2, NOVEMBER 2022
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v5i2.4642

Abstract

PT XYZ Batam is a manufacturing company that produces NTC (Negative Temperature Coefficient) Sensors.  This company has a Chip Dicing Department which is cutting the NTC substrate into chips and then measuring process, measuring process is checking process based on the chip resistance value by the TWA 1342 machine.Currently, the output of measuring process is not stable, so this study aims to determine the cause of low output and how to increase production output on the TWA 1342 machine with Overall Equipment Effectiveness (OEE) method. The results obtained based on calculations on the TWA 1342 machine are : availability value 95.12%, Performance value 85.06%, Quality value 98.97% and OEE value 80.08%.Based on the Pareto chart, the cause of output target being not achieved was due to a filter  was not suitable for use, because there were tears on the surface of the filter so the dirt was not filtered properly. And the action taken based on the fishbone diagram analysis is to replace the filter periodically and control it by having a filter change record.After the corrective steps have been taken, the changes in the OEE value on the TWA 1342 machine for one week of observation are as follows: Availability value 99.69%, Performance value 98.10%, Quality value 99.15%. And the OEE value is 96.96%. The percentage of the total output during the week of observation after corrective steps was taken is 98.10%. Where there is an increase in output of 13.04%.
IMPLEMENTASI METODE DMAIC UNTUK MENGURANGI CACAT PRODUK HE-EC2 DI PT PIB Putra, Rahmanda; Irwan, Hery; Sumarya, Edi
SIGMA TEKNIKA VOL 7, NO 1 (2024): SIGMATEKNIKA, VOL. 7, N0. 1, JUNI 2024
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v7i1.6118

Abstract

Penelitian ini menangani masalah tingginya tingkat penolakan (1,93%) dalam manufaktur komponen elektronik HE-EC2 di sebuah perusahaan semikonduktor, yang melebihi tingkat target 0,60%. Dengan menerapkan metode DMAIC (Define, Measure, Analyze, Improve, Control), penelitian ini secara sistematis mengidentifikasi, menganalisis, dan memperbaiki akar penyebab masalah penolakan. Analisis menunjukkan bahwa Gripper dalam proses Final Assy adalah penyumbang utama penolakan. Untuk mengatasi hal ini, parameter gripper, awalnya diatur pada 14 mm, dikurangi secara metodis menjadi 10 mm. Penyesuaian ini menghasilkan penurunan substansial dalam tingkat penolakan, dari 1,93% menjadi 0,57%. Analisis statistik menunjukkan bahwa tingkat cacat awal setara dengan DPMO (Defects Per Million Opportunities) sebesar 2751 dan nilai sigma sebesar 4,28. Setelah penyesuaian parameter, tingkat penolakan menurun menjadi DPMO sebesar 815, disertai peningkatan nilai sigma menjadi 4,65. Keberhasilan penerapan metode DMAIC, terutama dengan fokus pada parameter Gripper dalam proses Final Assy, menandakan peningkatan signifikan dalam kualitas produk. Penelitian ini menekankan efektivitas pendekatan sistematis dalam mengidentifikasi dan mengatasi faktor-faktor kunci yang memengaruhi penolakan, akhirnya mendekati tingkat penolakan yang ditargetkan sebesar 0,5%. Wawasan yang diperoleh dapat menjadi acuan berharga bagi perusahaan manufaktur yang bertujuan meningkatkan kualitas produk melalui optimasi proses yang tepat.
IMPLEMENTASI METODE SINGLE MINUTE EXCHANGE OF DIES UNTUK MENGURANGI SETUP TIME PERGANTIAN MOLD PADA MESIN SODICK Parikesit, Danang; Irwan, Hery
SIGMA TEKNIKA VOL 7, NO 1 (2024): SIGMATEKNIKA, VOL. 7, N0. 1, JUNI 2024
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v7i1.6165

Abstract

Semua perusahaan mengharapkan sistem produksi yang efektif dan efisien, namun tantangan mengenai sistem produksi yang tidak sempurna tidak dapat dihindari. Dalam penelitian ini kami menyelidiki kasus di PT Cicor Panatec yang memproduksi alat bantu dengar di bagian injeksi. Kami menemukan adanya pemborosan yang terjadi pada kegiatan penggantian cetakan. Karena banyak item memerlukan waktu pemrosesan yang lama, kami menyempurnakan sistem dengan menerapkan metode Single Minute Exchange of Dies (SMED), sebuah konsep dalam lean manufacturing. Kami bertujuan untuk memberikan proses penggantian cetakan yang lebih efektif dan efisien sehingga downtime mesin dapat dikurangi. Hasil penelitian ini menunjukkan pengurangan waktu setup sebesar 35% yang diperoleh melalui penghapusan dan pengurangan waktu penggantian cetakan menjadi 260 menit, yang sebelumnya membutuhkan waktu 400 menit. Penelitian ini menyimpulkan bahwa SMED efektif untuk mengurangi waktu set-up mesin dan meningkatkan efisiensi proses produksi. Dengan cara ni, penerapan metode SMED membantu perusahaan meningkatkan waktu penggantian cetakan di bagian injeksi Kata kunci : injection, lean manufacuring, produktivitas, pergantian cetakan, SMED.
PERANCANGAN SENSOR SWITCH PRINTER PRODUK SM5300X MENGGUNAKAN METODE QUALITY FUNCTION DEPLOYMENT UNTUK MENGATASI CUSTOMER COMPLAINT DI PT. TEB Afma, Vera Methalina; Irwan, Hery; Ngadiyono, Ngadiyono
SIGMA TEKNIKA Vol 6, No 2 (2023): SIGMATEKNIKA, VOL. 6, N0. 2, November 2023
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v6i2.5626

Abstract

One of he problem at PT. TEB is that the assembly process for installing switches on the scale printer without using tools or jigs, and it causes the switch position is not correct because employees only use feeling and hearing when installing and causes undetectable rejects (Can Not Print). Other factor is installing the switch on the printer without using tools can also take quite a long time, resulting in the production of scales being of poor quality. The aim of this research is how to design tools to help install switches on printers using the Quality Function Deployment (QFD) method and it is also hoped that the results of this design make the quality of the scales is even better. Data collection was carried out by distributing questionnaires to 10 people consisting of operators, production leaders and also Quality Control. The results of data collection from the questionnaire showed that it was necessary to add an Assembly Switch Process to the Printer, namely by adding a jig switch. Therefore a new jig design can be used. The output produced after using the switch jig design increased by 68% and the rejected output decreased by 75% so it is considered that the new jig design can increase production results.
IMPLEMENTASI METODE FAILURE MODE EFFECT ANALYSIS DAN PDCA DALAM MENINGKATKAN PRODUKTIVITAS FATTY ACID (Studi Kasus : PT. EO-Industri Kimia) Irwan, Hery; Afma, Vera Methalina; Falindo, Agri
SIGMA TEKNIKA Vol 7, No 2 (2024): SIGMATEKNIKA, VOL. 7, N0. 2, NOVEMBER 2024
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v7i2.6921

Abstract

PT. EO-Industri Kimia adalah perusahaan Oleokimia yang memproduksi Fatty Acid dari minyak kelapa sawit (CPO). Fatty Acid diperoleh melalui reaksi CPO dengan air pada temperatur 250-260 °C, tekanan 50-55 bar. Ukuran keberhasilan proses Fatty Acid dilihat dari perolehan Splitting Degree yaitu 98% minimal. Dalam proses pengolahan minyak sawit menjadi Fatty Acid di PT. EO, terdapat variasi perolehan nilai Splitting Degree. Pada bulan Februari 2024 rata-rata perolehan Splitting Degree ialah 97,53%. Tujuan penelitian ini adalah agar perolehan Splitting Degree tercapai minimal 98%. Dalam penelitian ini digunakan metode FMEA dan PDCA. FMEA adalah metode yang digunakan untuk mengidentifikasi kegagalan suatu proses. Sedangkan PDCA digunakan untuk perbaikan secara terus. Pada Februari 2024 perolehan rata-rata Splitting Degree ialah 97,53 %. Setelah dilakukan perbaikan menggunakan metode FMEA dan PDCA perolehan Splitting Degree pada Juli 2024 menjadi 98,95%. Penurunan perolehan Splitting Degree disebabkan oleh adanya BE yang terikut ke Splitting Column yang menyebabkan Floater Level Transmitter Stuck, Plug Control valve Fatty Acid dan RGW terkikis. Penyebab kedua ialah akibat adanya kontaminasi air umpan yakni %Gly > 0,2% di air umpan. Untuk meningkatkan perolehan Splitting Degree ialah dengan menjaga level air pada range 1,5 – 3 meter serta memastikan air umpan tidak terkontaminasi Glycerine ( 0,2 % maksimal).
ANALISA TINGKAT CACAT PADA PROSES PENGELASAN DENGAN METODE SIX SIGMA DAN FAILURE MODE AND EFFECTS ANALYSIS (FMEA) Irwan, Hery; Afma, Vera Methalina; Ramadhan, Gilang
SIGMA TEKNIKA Vol 8, No 2 (2025): SIGMATEKNIKA, VOL. 8, N0. 2, NOVEMBER 2025
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v8i2.8392

Abstract

Welding is an important process in the shipbuilding industry that affects the strength and safety of ship structures. At PT BVS, the Flux Cored Arc Welding (FCAW) process still produces a high defect rate, particularly types of defects such as porosity, slag inclusion, undercut, root concavity, and lack of fusion. Based on data from January to May 2025, the reject rate reached 56%, far exceeding the company's standard of 10%. This study aims to identify the types and causes of defects in FCAW welding, as well as provide improvement proposals using the Failure Mode and Effects Analysis (FMEA) method. The analysis show that the three causes with the highest RPN values come from human factors, methods, and machines. Improvement proposals include operator training, preparation of welding Standard Operating Procedures (SOP), regular equipment condition checks, and adjustment of welding parameters. The implementation of these improvement proposals is expected to reduce the defect rate, improve the quality of welding results, and minimize rework costs and production delays. This study provides practical contributions for companies in enhancing welding quality and serves as a reference for quality control in the shipbuilding industry.
Co-Authors Abd Rahman, MD. Nizam Achmad Yunus, Achmad Afma, Vera Alifudin, Ilham Alsyah Rizal anggie eka putri Annisa Purabasari Annisa Purabasari, Annisa Annisa Purbasari Annisa Purbasari, Annisa Anry, Anry S P Sihombing Aritonang, Fauzan Maulana Siddiq Choirul Anwar Choirul Anwar Crisantus Lawrensius Tongan Sitorus Crisantus Lawrensius Tongan Sitorus, Crisantus Lawrensius Tongan Dadang Redantan Dadang Redantan Dadang Redantan, Dadang Danang Parikesit Diah Pitaloka, Aminah Ebrahim, Zuhriah binti Edi Sumarya Edi Syahputra Elsa Berliani Fadhil mubaroq, Fadhil Falindo, Agri Fattah, Muhammad Rusydi Fauziyah Nur Jamal Gilang Ramadhan Holong P. Simanjuntak Jamal, Fauziyah Nur Lilies Purbandaru Lilies Purbandaru, Lilies Merjani, Abdulah Nandar Cundara Nandar Cundara, Nandar Napitupulu, Michel Frans Sisco Ngadiyono Ngadiyono, Ngadiyono Nizyak, Afrizah Khairul Novavictorianto, Yosef Kurnia Nuris, Muhammad Risky Alida Petra Paulus Tarigan Petra Paulus Tarigan, Petra Paulus Putra, Rahmanda Refdilzon Yasra Refdilzon Yasra, Refdilzon Risthia Eriana Putri Risthia Eriana Putri, Risthia Eriana Rohman, Muhammad Fatkhur Rumiyanto Rumiyanto Rumiyanto Rumiyanto, Rumiyanto Saputra, Yazelino Segara, Mutiara Mayang Sembiring, Ezra Mahyani Setiabudi, Yudi Simanjuntak, Holong P. Simarmata, Roberta Sinaga, Dina Sitohang, Sudika Diski Sudika Diski Sitohang Suirman Suirman Suirman Suirman, Suirman Sumarya, Edi Supriyanto Supriyanto Supriyanto Supriyanto Tarifar Bangun D. Tarifar Bangun D., Tarifar Tarigan, Ryan Dana Gidion Tri Yuningsih Tri Yuningsih Triyono Triyono Triyono Triyono Udin Udin Udin, Udin Vera Methalina Vera Methalina Afma Vera Methalina Afma, Vera Methalina Vera Methalina, Vera Yudi Setiabudi Yuniral Yuniral Yuniral Yuniral Yuniral, Yuniral Zaenal Arifin Zaenal Arifin Zidan Abdillah, Muhammad